US Patent Issued to Semiconductor Energy Laboratory on March 24 for "Light-emitting element, light-emitting device, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,588,408, issued on March 24, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Light-emitting element, light-emitting device, electronic device, and lighting device" was invented by Satoshi Seo (Kanagawa, Japan), Tsunenori Suzuki (Kanagawa, Japan), Yusuke Takita (Kanagawa, Japan) and Naoaki Hashimoto (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. In the light-emitting element, an EL layer includes a hole-injection layer, a first hole-transport layer, ...